Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jul. 28, 2019	Aug. 02, 2020	Jul. 28, 2019	Jul. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets		$ 43	$ 48	$ 20
Finite-Lived Intangible Asset, Expected Amortization, Year One		42
Finite-Lived Intangible Asset, Expected Amortization, Year Two		42
Finite-Lived Intangible Asset, Expected Amortization, Year Three		42
Finite-Lived Intangible Asset, Expected Amortization, Year Four		42
Finite-Lived Intangible Asset, Expected Amortization, Year Five		42
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 2,629	2,611	2,629
Snyder's-Lance [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 1,978
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets			$ 9	$ 14
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life		18 years 1 month 6 days
Customer Relationships [Member] | European Chips Business [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	$ 16
Trade Names - Snyder's of Hanover [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 620
Trade Names - Pace [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		292
Trade Name - Pacific Foods [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		$ 280